Looking to add bold color to your summer garden? Few flowers can match the tall, elegant spikes of Gladiolus. These popular summer bulbs come in a wide range of colors, from rich reds to soft pastels, and they are surprisingly easy to grow. Whether you are planting for the first time or want to sharpen your skills, this gladiolus planting guide will help you grow them like a pro.

Why Grow Gladiolus?

Gladiolus are known for their striking vertical form and large, vibrant blooms. They are a great way to add height and variety to flower beds, borders, and cutting gardens. Many gardeners also grow gladiolus specifically for fresh bouquets, since the long-lasting flowers hold up beautifully in a vase.

When and Where to Plant

The timing of planting is important. Plant gladiolus bulbs, which are actually corms, after the danger of frost has passed and once the soil has warmed to at least 55°F. In most areas, planting begins in late April and can continue into June.

Choose a planting spot with full sun, as gladiolus need at least six hours of sunlight per day to thrive. The soil should be well-draining. If your garden tends to hold water, mix in some compost or sand to improve drainage. Gladiolus grow tall, often reaching three to five feet, so plant them where they will not overshadow shorter flowers.

How to Plant Gladiolus

Here is a simple gladiolus planting guide to get you started:

1. Prepare the soil by loosening it to a depth of 10 to 12 inches. Adding compost will help enrich the soil.
2. Plant the corms with the pointed end facing up, about four inches deep.
3. Space corms about six inches apart to give each plant room to grow.
4. Water thoroughly after planting to help settle the soil around the corms.

For a longer blooming season, try planting new corms every two weeks from late spring through early summer.

Caring for Gladiolus

Once planted, Gladiolus are fairly easy to care for. Water consistently, providing about one inch of water per week. If your garden is exposed to wind, it is a good idea to stake the plants to support their tall flower spikes. Feeding the plants with a balanced flower fertilizer once the shoots appear will encourage stronger blooms.

Cutting Gladiolus for Bouquets

Gladiolus make excellent cut flowers. For the best vase life, cut the flower spikes when the lower blooms begin to open. Place the stems in fresh water and remove spent blooms to help the upper buds continue to open.

End-of-Season Care

In colder climates (Zone 6 and colder), gladiolus corms should be lifted after the first fall frost. Allow them to dry for several days, then store them in a cool, dry place until the next growing season. In warmer climates, you may be able to leave the corms in the ground to overwinter and return the following year.

Why Gladiolus Are a Must for Summer Gardens

If you want bold, beautiful flowers all summer long, gladiolus are an excellent choice. With just a few simple steps, you can grow healthy, vibrant blooms that stand tall in the garden and make a stunning addition to fresh bouquets.

Browse our collection of premium summer bulbs and start growing gladiolus like a pro this season!